• Preventive Nutrition and Food Science
• /
• 제13권4호
• /
• pp.366-369
• /
• 2008

Proteins secreted from bifidobacteria are believed to play important roles in human intestines via interacting with different host cells. In this respect, proteins secreted from Bifidobacterium pseudocatanulatum BP1, which has been rarely studied, were analyzed by two-dimensional gel electrophoresis (2DE). Using this approach, approx-imately 21 protein spots on a 2DE gel were detected and 10 of these spots were identified by mass spectrometry. Five spots were identified as hypothetical proteins and the remaining 5 spots were identified as a putative iron-side-rophore binding lipoprotein, a short-chain dehydrogenase/reductase SDR, an exonuclease, cytochrome P450 hydroxylase, and a putative dehydrogenase. The identification of secreted putative iron-siderophore binding lipoprotein was highly interesting since it is an important protein that is involved in ferric iron uptake in pathogenic bacteria. This finding could accelerate studies on the probiotic effect of Bifidobacterium by explaining the competition between bifidobacteria and intestinal pathogens for ferric iron.

• BMB Reports
• /
• 제43권8호
• /
• pp.535-540
• /
• 2010

Patients with hemorrhagic fever with renal syndrome (HFRS) often exhibit altered serum lipid and lipoprotein profile during the oliguric phase of the disease. Serum lipid and lipoprotein profiles were assessed during the oliguric and recovery phases in six male patients with HFRS. In the oliguric phase of HFRS, the apolipoprotein (apo) C-III content in high-density lipoproteins (HDL) was elevated, whereas the apoA-I content was lowered. The level of expression and activity of antioxidant enzymes were severely reduced during the oliguric phase, while the cholesteryl ester transfer protein activity and protein level were unchanged between the phases. In the oliguric phase, electromobility of $HDL_2$ and $HDL_3$ was faster than in the recovery phase. Low-density lipoprotein (LDL) particle size was smaller and the distribution was less homogeneous. Patients with HFRS in the oliguric phase had severely modified lipoproteins in composition and metabolism.

• Advances in Traditional Medicine
• /
• 제3권1호
• /
• pp.29-33
• /
• 2003

Sense-line (SL), a dietary functional food, is our invention for weight loss. To evaluate such an effect of SL, we analyzed the plasma levels of total cholesterol, low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, and weight changes after rats were fed on high fat diet with SL for 20 days. Plasma total cholesterol level and LDL-cholesterol level was decreased by 52% and 91.89% in 5% SL treated group and by 13% and 51.45% in 10% SL treated group, respectively. But HDL-cholesterol was not changed. In addition, the weight was significantly lower in SL group than in high-fat diet group (P<0.05). Our findings indicate that SL may contain compounds with actions, which can treat blood circulatory trouble as well as overweight.

• 한국식품위생안전성학회지
• /
• 제16권4호
• /
• pp.342-348
• /
• 2001

본 연구는 동맥경화의 원인으로 알려진 사람 oxidized low density lipoprotein (LDL)에 대한 chitin sulfate의 산화억제 효과에 대하여 실험하였다. 사람 LDL을 쥐의 마크로파지 유도 oxidized LDL로 산화시킬 때 chitin sulfate를 첨가하여 TBARS와 전기영동에 의한 이동상 및 $O_2$소거 기능을 확인하였다. 사람 LDL에 macrophage를 이용해서 LDL을 산화시킬 때 chitin sulfate를 50~100 $\mu$M 첨가하였을 때 억제 효과가 높았으며, chitin sulfate를 100 $\mu$M 첨가하였을 때 LDL의 산화가 거의 억제되었고, 전기영동에 의한 이동거리도 100 $\mu$M chitin sulfate에서 완전히 억제되었다. 그리고 phorbol myristate acetate를 처리한 마크로파아지 유도 활성 산소의 소거 효과는 chitin sulfate의 농도가 100$\mu$M일 때 거의 소거하였다. 이상의 결과로 보아 chitin sulfate는 동맥경화의 예방에 효과적이라는 결론을 얻었다.

• Mycobiology
• /
• 제39권2호
• /
• pp.96-102
• /
• 2011

We investigated diet supplementation with shiitake mushroom fruiting bodies on biochemical and histological changes in hypercholesterolemic rats. Six-wk old female Sprague-Dawley albino rats were divided into three groups of 10 rats each. A diet containing 5% Lentinus edodes fruiting bodies given to hypercholesterolemic rats reduced plasma total cholesterol, triglyceride, low-density lipoprotein (LDL), total lipid, phospholipids, and the LDL/high-density lipoprotein ratio by 34.33, 53.21, 75.00, 34.66, 25.73, and 71.43%, respectively. Feeding mushroom also significantly reduced body weight in hypercholesterolemic rats. However, it had no detrimental effects on plasma albumin, total bilirubin, direct bilirubin, creatinine, blood urea nitrogen, uric acid, glucose, total protein, calcium, sodium, potassium, chloride, inorganic phosphate, magnesium, or enzyme profiles. Feeding mushroom increased total lipid and cholesterol excretion in feces. The plasma lipoprotein fraction, separated by agarose gel electrophoresis, indicated that L. edodes significantly reduced plasma ${\beta}$ and pre-${\beta}$-lipoprotein but increased ${\alpha}$-lipoprotein. A histological study of hepatic cells by conventional hematoxylin-eosin and oil red-O staining showed normal findings for mushroom-fed hypercholesterolemic rats. These results suggest that shiitake mushrooms could be recommended as a natural cholesterol lowering substance in the diet.

• The Korean Journal of Physiology
• /
• 제16권2호
• /
• pp.195-207
• /
• 1982

장기적(長期的)인 채식섭취(菜食攝取)가 혈청(血淸)의 lipoprotein, cholesterol 및 단백량(蛋白量)에 미치는 영향(影響)을 알아보기 위하여 결은 여승(女僧) 45명(名)($20{\sim}35$세)과 대조군(對照群)으로 여대생(女大生) 29명(名)($20{\sim}22$세)을 연구대상(硏究對象)으로 하였다. 하루 열량섭취(熱量攝取)는 여승(女憎)들이 1,945 kcal 였고 여대생(女大生)은 1,815 kcal 였다. 열량구성비율(熱量構成比率)은 여승(女僧)들이 탄수화물(炭水化物) : 단백질(蛋白質) : 지방(地方)=84 : 11 : 5였고 학생(學生)은 70 : 15 : 15였으며 이는 여승(女僧)들의 탄수화물(炭水化物) 편중(偏重) 및 지방섭취부족(脂肪攝取不足)을 보여준다. 신체계측결과(身體計測結果) 여승(女僧)들은 여대생(女大生)보다 신장(身長)을 제외(除朴)하고, 체중(體重), 지방층(脂肪層)두께, 체표면적(體表面積) 및 비만도계수(肥滿度係數)가 모두 높았다. 수축기(收縮期) 및 이완기혈압(弛緩期血壓)은 여승(女憎)과 여대생(女大生)이 거의 같았다. 혈청(血淸)의 총지방(總脂肪), cholesterol 및 단백량(蛋白量)은 여승(女憎)과 여대생간(女大生間)에 유의(有意)한 차이(差異)가 없었다. 그러나 전기영동(電氣泳動)으로 분획(分劃)하여 혈청(血淸)의 high density lipoprotein(HDL), very low density lipoprotein(VLDL) 및 low density lipoprotein(LDL)량(量)을 비교(比較)해 본 결과(結果), 여승(女憎)들의 HDL은 여대생(女大生)보다 낮았으나 LDL은 유의(有意)하게 높았다. Cholesterol분획결과(分劃結果)도 역시 여승(女憎)들의 HDL-cholesterol값은 여대생(女大生)보다 유의(有意) 하게 낮은 반면(反面) LDL-cholesterol은 유의(有意)하게 높았다. Lipoprotein과 cholesterol간(間)의 상관계수(相關係數)(r)를 계산(計算)한 결과(結果) LDL과 LDL-cholesterol(r=0.40), VLDL과 VLDL-cholesterol(r=0.85), HDL과 HDL-cholesterol(r=0.45), 혈청총지방량(血淸總脂防量)과 cholesterol(r=0.66) 및 혈청(血淸) 총(總) cholesterol과 LDL-cholesterol(r=0.79) 간(間)에는 유의(有意)한 상관관계(相關關係)를 보여주었다. 그러나 혈청(血淸) cholesterol과 음식섭취(飮食攝取) 및 신체계측결과간(身體計測結果間)에는 유의(有意)한 상관관계(相關關係)가 나타나지 않았다. 혈청단백량(血淸蛋白量)은 여승(女憎)과 여대생간(女大生間)에 차이(差異)가 없었다. 이상(以上)의 결과(結果)는 여승(女憎)들의 장기적(長期的)인 채식섭취(菜食攝取)로 인(因)해 인체(人體)의 lipoprotein 및 cholesterol 대사(代謝)에 영향(影響)이 있음을 시사(示唆)해 주고 있다.

• Biotechnology and Bioprocess Engineering:BBE
• /
• 제5권5호
• /
• pp.313-319
• /
• 2000

A crucial and causative role in the pathogenesis of atherosclerosis is believed to be the oxidative modification of low density lipoprotein (LDL). The oxidation of LDL involves released free radical driven lipid peroxidation. Several lines of evidence support the role of oxidized LDL in atherogenesis. Epidemiologic studies have demonstrated an association between an increased intake of dietary antioxidant vitamins, such as vitamin E and vitamin C and reduced morbidity and mortality from coronary artery diseases. It is thus hypothesized that dietary antioxidants may help prevent the development and progression of atherosclerosis. The oxidation of LDL has been shown to be reduced by antioxidants, and, in animal models, improved antioxidants may offer possibilities for the prevention of atherosclerosis. The results of several on going long randomized intervention trials will provide valuahle information on the efficacy and safety of improved antioxidants in the prevention of atherosclerosis. This review a evaluates current literature involving antioxidants and vascular disease, with a particular focus on the potential mechanisms.

• KSBB Journal
• /
• 제15권2호
• /
• pp.156-161
• /
• 2000

해양에서 분리한 Streptomyces sp. BH-405의 배양액으로부터 정제하여 얻은 항산화 활성이 우수한 획분 band 2 에 대하여 사람 Low Density Lipoprotein(LDL)의 산화 억제 효과에 대하여 실험하였다. Streptomyces sp. BH-405의 배양액으로부터 분리 정제한 획분 band 2는 LDL에 대한 $5\mu\textrm{m}$ $CuSO_4$ 의 유도 산화를 측정한 결과 100 및 200 $\mu\textrm{g}$/mL에서 LDL의 산화억제 효과가 높았다. 그리고, band 2를 이용한 macrophage 및 J774 유도 LDL의 수식에 대한 항상화 효과도 native LDL에 비하여 높았다. 이때 같은 농도의 band 2를 첨가하여 산화 LDL의 전기영동의 이동거리를 측정한 결과 native LDL보다는 약간 높았으나 Oxid LDL의 대조군보다는 이동거리가 낮으며 공액2중결합의 생성억제 효과도 있었다. 사람 LDL의 산화에 대하여 macrophage 및 내피세포를 이용하여 125I-LDL 산화에 대하여 band 2를 각각 100 및 200 $\mu\textrm{g}$/mL씩 첨가하여 실험한 결과 사람 LDL의 분해는 대조구보다 낮았으며 용량 의존형의 결과를 나타내었다.

• Journal of Community Nutrition
• /
• 제2권2호
• /
• pp.119-128
• /
• 2000

Lifestyle and dietary behavior intervention as the primary prevention of lipid disorder seems safe and compatible with other treatments of cardiovascular diseases. Cross-sectional associations between lifestyle factors and dietary behavioral factors with plasma lipid and lipoprotein levels were analyzed in 189 middle-aged men in Suwon, Korea. Overnight fasting plasma levels of total cholesterol, high-density lipoprotein(HDL)-cholesterol, triacylglycerol and glucose were analyzed. Blood pressure and anthropometric data were also measured. Lifestyle factors such as smoking status, alcohol consumption and frequency of physical exercise were evaluated by a self-administered questionnaire. Questions regarding dietary behavior were also asked. The subjects were 43.8%${\pm}$7.9 years old, and 23.8%${\pm}$2.6kg/m$^2$. From stepwise regression analyses, significant correlates with total cholesterol level were body mass index(BMI), alcohol intake(negative), age and coffee drinking(model R$^2$=14.3%). BMI, breakfast-skipping, age, and sleeping hours were significant for triacylglycerol level(model R$^2$=15.8%). BMI, alcohol drinking(negative), age, and coffee drinking were significant for low-density lipoprotein(LDL)(model R$^2$=11.7%). Age(negative), BMI(negative), alcohol drinking, stress level(negative), physical exercise, and cigarette smoking(negative) were significant for high-density lipoprotein(HDL)(model R$^2$=12.1%). From stepwise regression analyses, excluding BMI and age as factors in the model, alcohol intake(negative) and coffee drinking were significantly correlated with total cholesterol level(model R$^2$=4.4%) : breakfast-skipping with triacylglycerol(model R$^2$=3.2%) : alcohol intake (negative) with LDL level(model R$^2$=3.4%) : alcohol intake, physical exercise and stress level(negative) with HDL level(model R$^2$=6.3%). The findings suggest that a healthy daily lifestyle and dietary behavior may have an anti-atherogenic effect by altering plasma lipid and lipoprotein levels in middle-aged Korean men. (J Community Nutrition 2(2) : 119∼128, 2000)

• 생명과학회지
• /
• 제22권12호
• /
• pp.1712-1717
• /
• 2012

Low density lipoprotein (LDL)의 산화는 동맥경화의 유발과 진행에 중요한 역할을 하는 것으로 알려져 있다. 본 연구는 숙성 마늘 유래 유황화합물인 S-allylmercaptocysteine의 항산화 효과를 실험하였다. S-allylmercaptocysteine의 항산화 효과는 $Cu^{2+}$ 유도 LDL에 대하여 thiobarturic acid substance (TBARS)와 전기영동 이동거리, 공액 이중결합으로 측정하였다. 사람 LDL을 $Cu^{2+}$ 유도로 산화시킬 때 S-allylmercaptocysteine은 용량 의존형으로 나타났으며, 농도가 $20{\mu}g/ml$ 일 때 거의 완전한 억제 효과를 나타내었다. S-allylmercaptocysteine에 대한 전기영동 이동거리로 $20{\mu}g/ml$ 일 때 가장 낮았으며 공액 2중결합 형성도 $20{\mu}g/ml$ 일 때 거의 억제되었다. 한편 S-allylmercaptocysteine을 항산화제인 $d{\ell}-{\alpha}$-tocopherol과 LDL에 대한 항산화력을 비교한 결과 같은 농도에서 S-allylmercaptocysteine이 약간 높았다. 따라서 S-allylmercaptocysteine이 동맥경화의 발병과 진행을 예방하는 역할을 할 것으로 생각된다.